What are some 50 cent words?

It's impossible to definitively say what a "50 cent word" is, as there's no official or established definition for that term. It's likely a playful or slang way of referring to words that:

* Sound expensive or fancy: These might be long, multisyllabic words, or words with Latin or Greek roots.

* Are uncommon or obscure: Words that most people wouldn't use in everyday conversation.

* Are pretentious: Words used to impress or sound more intelligent than one actually is.

Here are some examples of words that *might* be considered "50 cent words" based on those criteria:

* Sesquipedalian: (adjective) Characterized by long words.

* Ephemeral: (adjective) Lasting for a very short time.

* Ubiquitous: (adjective) Present, appearing, or found everywhere.

* Esoteric: (adjective) Intended for or likely to be understood by only a small number of people with a specialized knowledge or interest.

* Prognosticate: (verb) To predict or foretell a future event.

* Discombobulated: (adjective) Confused or disoriented.

* Mellifluous: (adjective) Sweet or musical; pleasing to the ear.

* Quixotic: (adjective) Exceedingly idealistic; unrealistic and impractical.

It's important to note: Using complex vocabulary isn't inherently bad. It's important to choose words that are appropriate for the situation and audience. Using words just to sound smart can come across as pretentious or insincere.